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package fish.payara.microprofile.restclient;

import org.eclipse.microprofile.rest.client.inject.RegisterRestClient;
import fish.payara.web.loader.ServletContainerInitializerBlacklist;

import jakarta.servlet.ServletContainerInitializer;
import java.util.Map;
import java.util.Set;
import java.util.stream.Collectors;

/**
 * Extension point that omits {@link ServletContainerInitializer ServletContainerInitializers} annotated with
 * {@link RegisterRestClient}. If we try and initialise these interfaces Jersey will fail them on validation (correctly)
 * since you will end up with a duplicate mapping (the interface itself against the actual endpoint implementation).
 *
 * Using an extension mechanism rather than having this check directly in
 * {@link org.glassfish.web.loader.ServletContainerInitializerUtil} allows us to avoid pulling MicroProfile APIs into
 * the core server as a dependency.
 *
 * @author Andrew Pielage
 */
public class RestClientServletContainerInitializerBlacklist implements ServletContainerInitializerBlacklist {

    @Override
    public void removeServletContainerInitializers(Map<Class<? extends ServletContainerInitializer>,
            Set<Class<?>>> initializerMap) {

        for (Map.Entry<Class<? extends ServletContainerInitializer>, Set<Class<?>>> e : initializerMap.entrySet()) {
            Class<? extends ServletContainerInitializer> initializer = e.getKey();

            if (e.getValue() != null) {
                // Don't try to initialise MicroProfile Rest Client interfaces as servlets
                initializerMap.put(initializer,
                        initializerMap.get(initializer).stream()
                                .filter(clazz -> !clazz.isAnnotationPresent(RegisterRestClient.class))
                                .collect(Collectors.toSet()));
            }
        }
    }
}
